Mark Filipak (ffmpeg) wrote > I hoped that "marked as interlaced" [1] meant that > > 'select=expr=not(eq(interlace_type\,TOPFIRST)+eq(interlace_type\,BOTTOMFIRST))' > [2] > > would work. However, the 'select' doesn't work. I'm counting on the > 'select' working -- not working > is a complete show stopper. > > Is there some other species of "marked as interlaced" that will make the > 'select' work? > > Thanks, > Mark. > > [1] From https://ffmpeg.org/ffmpeg-filters.html#fieldmatch > "The separation of the field matching and the decimation is notably > motivated by the possibility of inserting a de-interlacing filter > fallback between the two. If the source has mixed telecined and real > interlaced content, fieldmatch will not be able to match fields for > the interlaced parts. But these remaining combed frames will be > *marked as interlaced*, and thus can be de-interlaced by a later > filter such as yadif before decimation." > > [2] From https://ffmpeg.org/ffmpeg-filters.html#select_002c-aselect > "interlace_type (video only) > " The frame interlace type. It can assume one of the following values: > " PROGRESSIVE > " The frame is progressive (not interlaced). > " TOPFIRST > " The frame is top-field-first. > " BOTTOMFIRST > " The frame is bottom-field-first."
Try using combmatch=full for fieldmatch In this zip file is a sample test video "cadence.mp4". It has 23.976p content, 29.97i (59.94 fields/sec interlaced) content, and 29.97p content, all in a 29.97i stream. (There are many others cadences, but those are the 3 most common) https://www.mediafire.com/file/m46kc4p1uvt7ae3/cadence_tests.zip/file In this example for -vf select after fieldmatch, the 2 branches are "progressive" and "not progressive". You can experiment with split and various processing with interleave in the filter chain progressive frames after fieldmatch ffmpeg -i cadence.mp4 -filter_complex "fieldmatch=combmatch=full, select='eq(interlace_type\,PROGRESSIVE)'" -c:v libx264 -crf 18 -an fieldmatch_combmatchfull_prog.mkv not progressive frames after fieldmatch ffmpeg -i cadence.mp4 -filter_complex "fieldmatch=combmatch=full, select='not(eq(interlace_type\,PROGRESSIVE))'" -c:v libx264 -crf 18 -an fieldmatch_combmatchfull_notprog.mkv -y -- Sent from: http://ffmpeg-users.933282.n4.nabble.com/ _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
